EP1228681A1 - Mowing apparatus - Google Patents

Mowing apparatus Download PDF

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Publication number
EP1228681A1
EP1228681A1 EP02002415A EP02002415A EP1228681A1 EP 1228681 A1 EP1228681 A1 EP 1228681A1 EP 02002415 A EP02002415 A EP 02002415A EP 02002415 A EP02002415 A EP 02002415A EP 1228681 A1 EP1228681 A1 EP 1228681A1
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EP
European Patent Office
Prior art keywords
mower
combustion engine
internal combustion
mower according
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02002415A
Other languages
German (de)
French (fr)
Other versions
EP1228681B1 (en
Inventor
Kenneth Edward Hunt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
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Deere and Co
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Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP1228681A1 publication Critical patent/EP1228681A1/en
Application granted granted Critical
Publication of EP1228681B1 publication Critical patent/EP1228681B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
    • A01D69/02—Driving mechanisms or parts thereof for harvesters or mowers electric
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • A01D34/008—Control or measuring arrangements for automated or remotely controlled operation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/76—Driving mechanisms for the cutters
    • A01D34/80—Driving mechanisms for the cutters fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S56/00—Harvesters
    • Y10S56/07—Remote control implement

Definitions

  • the invention relates to a mower, in particular a Lawn mower, with an internal combustion engine, a generator, at least one cutting unit, and several wheels, the Cutting unit by the internal combustion engine and at least one Wheel can be driven by an electric motor.
  • DE-A1-100 27 53 shows one automatically or by means of Remote control controllable soil cultivator in style a lawnmower with an internal combustion engine, which one Knife bar and also drives a generator. This generator supplies electrical via a circuit Energy on motors that drive the wheels of the device to move this.
  • the problem underlying the invention is seen in that the internal combustion engine of such a mower is operated must be in order to move the mower.
  • the cutting unit can be mowed or Cutter bar or a cutting spindle. at the cutter bar can be a conventional cutter bar trade with two cutting edges. But it is also the use from cutter bars with more than two cutting edges or from specially designed mulching devices or mulching knives conceivable.
  • the drive of the cutting unit by the Internal combustion engine is particularly favorable when the Cutter bar is provided with facilities that allow an air flow generate the cut or cut plants sucks or promotes. For this purpose, cutter bars and in particular cutter bars designed as mulching knives often with wings Mistake. Such an implementation in turn requires a higher one Power of the motor that drives them.
  • Next to the cutter bar can also other work units, such as a blower, a additional mulching equipment, scarifying equipment etc. operated by the internal combustion engine.
  • the internal combustion engine drives this a hydraulic pump, which with the Cutting unit (s) driving hydraulic motors together more (ed).
  • a mower according to the present invention can by an operator guided over a handle or spar, etc. become. But it is particularly cheap if the mower automatically, for example in the manner of a robotic lawnmower, or also works remotely.
  • the mower can have a control unit, which with the Wheel and the electrical storage unit cooperates. about the control unit can, for example, the speed, Direction of rotation etc. of the wheel or the speed of rotation, Direction of rotation or the torque of the wheel driving Electric motor or the hydraulic drive can be controlled.
  • the control unit with the electrical storage unit is connected to their operation by the internal combustion engine such independent.
  • the control unit acts with a remote controllable and / or independent steering system together, so is an autonomous or remote operation of the mower possible, the Driving and mowing functions controlled by the control unit can be.
  • sensors can be attached to the mower be provided or the control unit can be connected to external Interact sensors that allow the mower Dodges obstacles and / or only in a predetermined Area works.
  • Such a control unit only on one wheel acts.
  • the mower is more mobile but if two or more wheels of the mower are controlled, so that, for example, the mower turns on the spot becomes possible without causing damage to the sward comes from non-steered / controlled wheels.
  • the electrical storage unit can be by a battery or also one consisting of several individual batteries Battery pack are formed.
  • the batteries or too Accumulators are provided to be rechargeable. It is also conceivable that non-rechargeable for emergency operation Batteries can be inserted into the mower, which then but are not to be connected to the generator.
  • a knife brake can also be placed on the cutting unit act that the knife decommissioned when it from the Internal combustion engine is disconnected so it doesn't continues to rotate uncontrolled.
  • a single cutting unit can be provided on the mower his.
  • Mowers which are used to work larger areas are thought to have two or more cutting units in one or more housing (s) to make a larger one Achieve cutting width.
  • One drive of several Cutting units through the internal combustion engine can be made via a Gearbox. For example, a simple to do this Handling and easy to maintain belt drive his.
  • a Self-propelled mower 10 which is a frame 12 has, which is on the ground via a front Free wheel assembly or a free wheel 14 and over rear electrically driven wheel assemblies 16 and 18 supported.
  • a conventional mower, which is generally 20 is designated by the frame 12 across spaced brackets, one of which is shown at 24, and via a front linkage, an area of which at 26 is shown adjustable, so that the mower 20 between a working position and a transport position and to change the cutting height of the mower 20 when it is is in the working position, can be moved.
  • An internal combustion engine 30 is arranged on the mower 20 and has a vertical drive shaft 34 which via a Knife brake (BBC) 36 with a winged Cutter bar 40 is connected to cutter bar 40 about an axis 34a of the drive shaft 34 to rotate.
  • BBC Knife brake
  • the Cutter bar 40 directly with a lower end of the Drive shaft 34 connected and an engine shutdown circuit used to turn off the engine 30 and to stop rotation of the cutter bar 40.
  • an electrical generator 50 preferably an alternator or a AC generator provided by the Internal combustion engine 30 is driven and with a Battery pack, a battery or an electrical Storage unit 54 (FIG. 2) via a voltage regulator 56 connected is.
  • the generator 50 and the storage unit 54 define an electrical energy source 58, which also with an electric drive and navigation system or one Steering system is connected, which is generally 60 in Fig. 2 referred to as.
  • An electric starter 64 is connected to the Internal combustion engine 30 connected to internal combustion engine 30 to start when starting.
  • the electrical storage unit 54 provides a nominal voltage, which is preferably in is in a range of about 12 to 42 volts, and is at that Frame 12 behind the rear, drivable Wheel assemblies 16 and 18 arranged. Behind the Internal combustion engine 30, a fuel tank 66 is provided.
  • the steering system 60 has a control unit 70 (FIG. 2), which with the energy source 58 and a navigation and Obstacle detection circuit or steering circuit 72 connected to provide mower control.
  • the Control unit 70 also has an output 74, which with the engine brake 36 for controlling braking, engagement and Disengagement of the cutter bar 40 is connected.
  • Wheel drive control outputs or control outputs 76 and 78 of the Control unit 70 each enable control of the individual wheel drive assemblies 16 and 18.
  • the steering circuit 72 preferably has conventional touch sensors, Ultrasonic sensors and / or infrared sensors for avoidance of touching obstacles, and a conventional one Navigation system such as a satellite positioning system (GPS) Ultrasound system or a laser vision system.
  • GPS satellite positioning system
  • the drivable wheel assemblies 16 and 18 have electrical Drive control circuits or drive controls 86 and 88 (FIG. 2), which is connected to the electrical energy source 58 are connected and have output connections which with Electric motors 96 and 98 are connected.
  • the output ports of the individual drive controls 86 and 88 and thus the Direction, speed and torque of each Electric motors 96 and 98 depend on the control outputs 76 and 78 from.
  • the polarity, voltage, duty cycle and / or the Voltage of the output of the drive control circuits 86 and 88 can be changed to the desired control To make available.
  • Reduction gear 106 and 108 connect the electric motors 96 and 98 to drivable wheels 110 and 112 to the mower 10 under the control of the control unit 70 and the steering circuit 72 to drive.
  • the control unit 70 and the steering circuit 72 also control the engagement and disengagement of the Drive of the cutter bar 40.
  • the drive of the cutter bar 40 directly through the Internal combustion engine 30 is provided.
  • the drive of the cutter bar 40 or the Cutter bar by a motor-driven hydraulic drive, such as a hydrostatic drive 38, as shown schematically in FIG. 5 is shown can be achieved.
  • the cutting function can be effected, for example, by a plurality of spindles 40r the drive by hydraulic motors 40h, which with the spindles 40r are connected and driven by a hydraulic pump 41 which, with the drive shaft 34 of the internal combustion engine 30 is connected to be provided.
  • Cutter bar with higher performance requirements and a better one Cutting and conveying capacity, such as knife bars with wings 40, as in the figures shown, or several spindles 40r, as shown in Figure 5, because of the limitations of an electric drive is avoided.
  • the Drive and steering of the mower 10 under control the control unit 70 and the steering circuit 72.
  • the drive of the Cutter bar 40 is not with internal combustion engine 30 but connected to an electrical energy source 58 by one more convenient and less expensive and complex speed, To allow directional and steering control than this other types of propulsion systems including some Hybrid systems that connect the drive to the wheels, are needed.
  • mower 210 On self-propelled mower 210 has a frame 212 (partially shown cut open) on which is on the Under a front freewheel assembly or a Free wheel 214 and rear electrically driven Supports wheel assemblies 216 and 218.
  • a mower with two Cutter bar which is generally designated 220 adjustable through frame 212 via a conventional one Mower lifting device (not shown) for movement between a raised transport position and a lowered one Mowing position added.
  • Adjustable track wheels 222 and 224 support the front areas of the mower 20. When the mower 220 is lowered into its mowing position, the cutting height can be adjusted by the mower lifting device and adjustable track wheels 222 and 224 are set.
  • An internal combustion engine 230 is provided on the mower 220 and has a vertical drive shaft 234 which over an electric PTO clutch or Coupling device 236 with a belt drive 238 in Connection is established.
  • a strap 239 (Fig. 4) is around one Drive pulley 240 guided, which for rotation about an axis 234a of the drive shaft 234 is connected.
  • the belt is 239 also passed around a pulley (not shown) which is arranged on the mower 220 and rotating in opposite directions, upright waves 242 and 244 over a conventional, synchronous drive, which is between the shafts 242 and 244 extends, drives.
  • the axes of shafts 234, 242 and 244 are arranged essentially in parallel and are winged or winged cutter bars 246 and 247 at the bottom End portions of shafts 242 and 244 for rotation about corresponding shaft axes arranged.
  • a non-synchronous one between the shafts 242, 244 V-belt drive can be provided.
  • an electrical generator 252 preferably an alternator or a AC generator powered by the internal combustion engine 230 is powered and with a battery pack, a battery or an electrical storage unit 254 (FIG. 3) via a Voltage regulator (not shown) in the above with reference to Fig. 2 described manner is arranged.
  • It is an electric drive and navigation system or Steering system 260, which essentially corresponds to steering system 60 from Fig. 2 and above for the mower 10th wherein the drivable wheel assemblies 216 and 218 with the driven wheel assemblies 16 and 18 Fig. 2 correspond.
  • the knife brake clutch assembly or the knife brake 36 of FIG. 2 is by the electrical Coupling device 236 replaced, which with the control output 74 of the control unit 70 is connected.
  • a buffer or a Touch sensor, generally designated 270, is also on the mower 210, which in FIGS. 3 and 4 is shown provided. Touch sensor 270 provides one additional input to steering circuit 72.
  • a motor drive is attached directly to the winged cutter bars 246 and 247 via the belt drive 238 and the synchronous or V-belt drive delivered between shafts 242 and 244, while the mower 210 is driven exclusively by the electrical energy source 58 takes place.
  • the electric motors 96 and 98 are controlled to achieve a mowing speed, To deliver directional and steering control. Again can different types of electric drive and Navigation systems and various direct motor drives the cutting units with a system according to the present invention can be used.

Abstract

The mower has an internal combustion engine (30), a generator (50), at least one cutting unit and several wheels (110,112). The generator and the at least one cutting unit are driven by the engine and at least one wheel is driven by an electric motor (96,98). The generator supplies electrical energy to at least one electrical storage unit (54), which is connected to the electric motor.

Description

Die Erfindung betrifft ein Mähgerät, insbesondere einen Rasenmäher, mit einem Verbrennungsmotor, einem Generator, wenigstens einer Schneideinheit, und mehreren Rädern, wobei die Schneideinheit durch den Verbrennungsmotor und wenigstens ein Rad durch einen Elektromotor antreibbar ist.The invention relates to a mower, in particular a Lawn mower, with an internal combustion engine, a generator, at least one cutting unit, and several wheels, the Cutting unit by the internal combustion engine and at least one Wheel can be driven by an electric motor.

Die DE-A1-100 27 53 zeigt ein automatisch oder mittels Fernbedienung steuerbares Bodenbearbeitungsgerät in der Art eines Rasenmähers mit einem Verbrennungsmotor, welcher einen Messerbalken und darüber hinaus einen Generator antreibt. Dieser Generator liefert über einen Stromkreis elektrische Energie an Motoren, welche Räder des Geräts antreiben, um dieses fortzubewegen.DE-A1-100 27 53 shows one automatically or by means of Remote control controllable soil cultivator in style a lawnmower with an internal combustion engine, which one Knife bar and also drives a generator. This generator supplies electrical via a circuit Energy on motors that drive the wheels of the device to move this.

Das der Erfindung zugrunde liegende Problem wird darin gesehen, dass der Verbrennungsmotor eines solchen Mähgeräts betrieben werden muss, um das Mähgerät fortzubewegen.The problem underlying the invention is seen in that the internal combustion engine of such a mower is operated must be in order to move the mower.

Dieses Problem wird erfindungsgemäß durch die Lehre des Patentanspruchs 1 gelöst, wobei in den weiteren Patentansprüchen die Lösung in vorteilhafter Weise weiterentwickelnde Merkmale aufgeführt sind.This problem is solved according to the invention by the teaching of the patent claim 1 solved, the in the further claims Features that further develop features in an advantageous manner are listed.

Auf diese Weise wird ein Mähgerät zur Verfügung gestellt, dessen Fortbewegung nicht von dem Betriebszustand des Verbrennungsmotors abhängig ist. Unabhängig davon, ob der Verbrennungsmotor betrieben wird oder abgeschaltet ist, liefert die Speichereinheit elektrische Energie an die Elektromotoren, welche die Räder antreiben, die das Mähgerät über den Untergrund fortbewegen. Der Antrieb der Schneideinheit hingegen erfolgt durch den Verbrennungsmotor, da die Schneideinheit größere Anforderungen an die Leistung des sie antreibenden Motors stellt. Die Räder können somit durch die Elektromotoren auch dann angetrieben werden, wenn der Verbrennungsmotor nicht betrieben wird. Dies ist insbesondere dann vorteilhaft, wenn das Mähgerät nur zum Transport oder Standortwechsel fortbewegt werden soll, ohne das ein Betrieb der Schneideinheit notwendig oder gewünscht ist. Es werden dann nur geringe Geräuschemissionen abgegeben, da nur die Elektromotoren arbeiten und weder der Verbrennungsmotor betrieben wird noch die Schneideinheit rotiert und somit auch der durch diese im Betrieb erzeugte erhebliche Luftschall wegfällt. Da die elektrische Speichereinheit durch den Generator, der durch den Verbrennungsmotor betrieben wird, aufgeladen werden kann, erhöht sich der Aktionsradius bzw. die maximale Betriebsdauer das Mähgeräts. Dies insbesondere auch deshalb, da der hohe Leistungsanforderungen stellende Antrieb der Schneideinheit durch den Verbrennungsmotor und somit unabhängig von der elektrischen Speichereinheit erfolgt. Ein Aufladen der elektrischen Speichereinheit mittels einer stationären bzw. von dem Mähgerät unabhängigen Ladestation bzw. einem Netzanschluss ist weniger häufig notwendig, wodurch das Mähgerät flexibler und/oder auch für größere Flächen einsetzbar ist.In this way a mower is made available whose movement does not depend on the operating state of the Internal combustion engine is dependent. Regardless of whether the Internal combustion engine is operated or is switched off, supplies the electrical energy storage unit to the electric motors, which drive the wheels that drive the mower across the Move underground. The drive of the cutting unit, however, is done by the internal combustion engine since the cutting unit greater demands on the performance of the driving Motors provides. The wheels can thus be driven by the electric motors be driven even when the internal combustion engine is not is operated. This is particularly advantageous if the mower is only moved for transport or change of location should be necessary without having to operate the cutting unit or is desired. Then it will only be minor Noise emissions given because only the electric motors work and neither the internal combustion engine is operated nor the cutting unit rotates and thus also by this in Operation generates significant airborne noise. Since the electrical storage unit by the generator by the Internal combustion engine is operated, can be charged the radius of action or the maximum operating time increases the mower. This is particularly because the high Power requirements drive the cutting unit through the internal combustion engine and thus independent of the electrical storage unit. Charging the electrical storage unit by means of a stationary or the mower-independent charging station or a mains connection is necessary less often, which makes the mower more flexible and / or can also be used for larger areas.

Die Schneideinheit kann in der Art eines Mäh- bzw. Messerbalkens oder auch einer Mähspindel ausgeführt sein. Bei dem Messerbalken kann es sich um einen üblichen Messerbalken mit zwei Schneidkanten handeln. Es ist aber auch der Einsatz von Messerbalken mit mehr als zwei Schneidkanten oder auch von speziell ausgebildeten Mulcheinrichtungen oder Mulchmessern denkbar. Der Antrieb der Schneideinheit durch den Verbrennungsmotor ist insbesondere auch dann günstig, wenn der Mähbalken mit Einrichtungen versehen ist, die einen Luftstrom erzeugen, der geschnittene oder auch zu schneidende Pflanzen ansaugt oder fördert. Hierzu sind Messerbalken und insbesondere als Mulchmesser ausgebildete Messerbalken häufig mit Flügeln versehen. Eine solche Ausführung wiederum erfordert eine höhere Leistung des sie antreibenden Motors. Neben dem Mähbalken können auch weitere Arbeitseinheiten, wie ein Gebläse, eine zusätzliche Mulcheinrichtung, Vertikutiereinrichtungen etc. durch den Verbrennungsmotor betrieben werden.The cutting unit can be mowed or Cutter bar or a cutting spindle. at the cutter bar can be a conventional cutter bar trade with two cutting edges. But it is also the use from cutter bars with more than two cutting edges or from specially designed mulching devices or mulching knives conceivable. The drive of the cutting unit by the Internal combustion engine is particularly favorable when the Cutter bar is provided with facilities that allow an air flow generate the cut or cut plants sucks or promotes. For this purpose, cutter bars and in particular cutter bars designed as mulching knives often with wings Mistake. Such an implementation in turn requires a higher one Power of the motor that drives them. Next to the cutter bar can also other work units, such as a blower, a additional mulching equipment, scarifying equipment etc. operated by the internal combustion engine.

Insbesondere bei einem Einsatz einer oder auch mehrerer Mähspindeln , aber auch dann, wenn der Verbrennungsmotor nicht in unmittelbarer Nähe der Schneideinheit vorgesehen ist, kann der Verbrennungsmotor mit einem hydrostatischen Antrieb zusammenwirken, welcher wiederum eine oder mehrere Schneideinheiten antreibt. Hierzu treibt der Verbrennungsmotor eine Hydraulikpumpe an, welche mit wiederum die Schneideinheit(en) antreibenden Hydraulikmotoren zusammenwirk(t)en.Especially when using one or more Mower spindles, but also when the internal combustion engine is not is provided in the immediate vicinity of the cutting unit the internal combustion engine with a hydrostatic drive interact, which in turn one or more Drives cutting units. The combustion engine drives this a hydraulic pump, which with the Cutting unit (s) driving hydraulic motors together more (ed).

Ein Mähgerät entsprechend der vorliegenden Erfindung kann durch eine Bedienungsperson über einen Griff oder Holm etc. geführt werden. Besonders günstig ist es aber, wenn das Mähgerät selbsttätig, beispielsweise in der Art eines Mähroboters, oder auch ferngesteuert arbeitet.A mower according to the present invention can by an operator guided over a handle or spar, etc. become. But it is particularly cheap if the mower automatically, for example in the manner of a robotic lawnmower, or also works remotely.

Das Mähgerät kann eine Steuereinheit aufweisen, welche mit dem Rad und der elektrischen Speichereinheit zusammenwirkt. Über die Steuereinheit kann beispielsweise die Geschwindigkeit, Drehrichtung etc. des Rades oder die Drehgeschwindigkeit, Drehrichtung oder das Drehmoment des das Rad antreibenden Elektromotors oder des Hydraulikantriebs gesteuert werden. Da die Steuereinheit mit der elektrischen Speichereinheit verbunden ist, ist ihr Betrieb von dem Verbrennungsmotor als solchem unabhängig.The mower can have a control unit, which with the Wheel and the electrical storage unit cooperates. about the control unit can, for example, the speed, Direction of rotation etc. of the wheel or the speed of rotation, Direction of rotation or the torque of the wheel driving Electric motor or the hydraulic drive can be controlled. There the control unit with the electrical storage unit is connected to their operation by the internal combustion engine such independent.

Wirkt die Steuereinheit mit einem fernsteuerbaren und/oder selbsstätigen Lenksystem zusammen, so ist ein autonomer oder ferngesteuerter Betrieb des Mähgeräts möglich, wobei dessen Fahr- und Mähfunktionen durch die Steuereinheit gesteuert werden können. Hierzu können an dem Mähgerät Sensoren vorgesehen sein oder die Steuereinheit kann mit externen Sensoren zusammenwirken, die es ermöglichen, dass das Mähgerät Hindernissen ausweicht und/oder nur in einem vorbestimmten Gebiet arbeitet.The control unit acts with a remote controllable and / or independent steering system together, so is an autonomous or remote operation of the mower possible, the Driving and mowing functions controlled by the control unit can be. For this purpose, sensors can be attached to the mower be provided or the control unit can be connected to external Interact sensors that allow the mower Dodges obstacles and / or only in a predetermined Area works.

Es ist denkbar, dass eine solche Steuereinheit nur auf ein Rad wirkt. Eine größere Beweglichkeit des Mähgeräts ergibt sich aber, wenn zwei oder mehr Räder des Mähgeräts gesteuert werden, so dass beispielsweise ein Drehen des Mähgeräts auf der Stelle möglich wird, ohne dass es zu einer Beschädigung der Grasnarbe durch nicht gelenkte/gesteuerte Räder kommt.It is conceivable that such a control unit only on one wheel acts. The mower is more mobile but if two or more wheels of the mower are controlled, so that, for example, the mower turns on the spot becomes possible without causing damage to the sward comes from non-steered / controlled wheels.

Die elektrische Speichereinheit kann durch eine Batterie oder auch einen aus mehreren Einzelbatterien bestehenden Batteriepack gebildet werden. Die Batterien oder auch Akkumulatoren sind wiederaufladbar vorgesehen. Es ist aber auch denkbar, dass für einen Notbetrieb nicht wiederaufladbare Batterien in das Mähgerät eingesetzt werden können, welche dann allerdings nicht mit dem Generator zu verbinden sind.The electrical storage unit can be by a battery or also one consisting of several individual batteries Battery pack are formed. The batteries or too Accumulators are provided to be rechargeable. It is also conceivable that non-rechargeable for emergency operation Batteries can be inserted into the mower, which then but are not to be connected to the generator.

Ist zwischen dem Verbrennungsmotor und der Schneideinheit eine Kupplungseinrichtung vorgesehen, so kann der Verbrennungsmotor von der Schneideinheit getrennt werden, so dass die Schneideinheit zu- bzw. abgeschaltet werden kann, ohne dass der Betriebszustand des Verbrennungsmotors verändert werden muss. Auf die Schneideinheit kann darüber hinaus eine Messerbremse wirken, die das Messer stilllegt, wenn es von dem Verbrennungsmotor getrennt wird, so dass es nicht unkontrolliert weiterrotiert.Is a between the internal combustion engine and the cutting unit Coupling device provided, so the internal combustion engine be separated from the cutting unit so that the Cutting unit can be switched on or off without the Operating state of the internal combustion engine must be changed. A knife brake can also be placed on the cutting unit act that the knife decommissioned when it from the Internal combustion engine is disconnected so it doesn't continues to rotate uncontrolled.

Es kann vorgesehen sein, dass auch der Betrieb bzw. das Einund Ausrücken der Kupplungseinrichtung durch die Steuereinheit gesteuert wird. Es ist aber auch ein von dieser unabhängiger Betrieb bzw. eine unabhängige Steuerung denkbar.It can be provided that the operation and the Einund Disengaging the clutch device by the control unit is controlled. But it is also an independent one Operation or independent control possible.

An dem Mähgerät kann eine einzelne Schneideinheit vorgesehen sein. Mähgeräte, welche zur Bearbeitung größerer Flächen gedacht sind, weisen häufig zwei oder mehr Schneideinheiten in einem oder mehreren Gehäuse(n) auf, um eine größere Schnittbreite zu erzielen. Ein Antrieb mehrerer Schneideinheiten durch den Verbrennungsmotor kann über ein Getriebe erfolgen. Beispielsweise kann hierzu ein einfach zu handhabender und leicht zu wartender Riemenantrieb vorgesehen sein. A single cutting unit can be provided on the mower his. Mowers, which are used to work larger areas are thought to have two or more cutting units in one or more housing (s) to make a larger one Achieve cutting width. One drive of several Cutting units through the internal combustion engine can be made via a Gearbox. For example, a simple to do this Handling and easy to maintain belt drive his.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
eine perspektivische Darstellung eines selbsttätigen Mähgeräts mit einem Mähbalken, welches zur Darstellung seines Antriebssystems teilweise aufgebrochen dargestellt ist,
Fig. 2
eine schematische Darstellung des Antriebssystems entsprechend Fig. 1,
Fig. 3
eine perspektivische Darstellung eines Bereichs eines selbsttägigen Mähgeräts mit einem elektrischen Radantriebssystem und durch einen Verbrennungsmotor antreibbaren Mähbalken und
Fig. 4.
eine Ansicht des Mähgeräts aus Fig. 3 von vorn betrachtet, wobei dieses bereichsweise aufgebrochen ist, damit die Antriebsbauteile besser dargestellt werden können.
In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
1 shows a perspective view of an automatic mower with a cutter bar, which is shown partially broken away to show its drive system,
Fig. 2
1 shows a schematic illustration of the drive system corresponding to FIG. 1,
Fig. 3
a perspective view of an area of an automatic mower with an electric wheel drive system and by a combustion engine driven cutter bar and
Fig. 4.
a view of the mower of Fig. 3 viewed from the front, which is broken open in some areas, so that the drive components can be shown better.

Es wird nun auf Fig. 1 Bezug genommen, in der ein selbstfahrendes Mähgerät 10 gezeigt wird, welches einen Rahmen 12 aufweist, der sich auf dem Untergrund über einen vorderen Freilaufradzusammenbau bzw. ein Freilaufrad 14 und über rückwärtige elektrisch antreibbare Radzusammenbauten 16 und 18 abstützt. Ein konventionelles Mähwerk, welches allgemein mit 20 bezeichnet wird, wird durch den Rahmen 12 über quer beabstandete Halterungen, von denen eine bei 24 gezeigt wird, und über ein vorderes Gestänge, von dem ein Bereich bei 26 dargestellt ist, verstellbar getragen, so dass das Mähwerk 20 zwischen einer Arbeitsstellung und einer Transportstellung und zur Veränderung der Schnitthöhe des Mähwerks 20, wenn es sich in der Arbeitsstellung befindet, bewegt werden kann.1, in which a Self-propelled mower 10 is shown, which is a frame 12 has, which is on the ground via a front Free wheel assembly or a free wheel 14 and over rear electrically driven wheel assemblies 16 and 18 supported. A conventional mower, which is generally 20 is designated by the frame 12 across spaced brackets, one of which is shown at 24, and via a front linkage, an area of which at 26 is shown adjustable, so that the mower 20 between a working position and a transport position and to change the cutting height of the mower 20 when it is is in the working position, can be moved.

Ein Verbrennungsmotor 30 ist auf dem Mähwerk 20 angeordnet und weist eine vertikale Antriebswelle 34 auf, welche über eine Messerbremse (BBC) 36 mit einem mit Flügeln versehenen Mähbalken 40 verbunden ist, um den Mähbalken 40 um eine Achse 34a der Antriebswelle 34 zu drehen. Alternativ könnte der Mähbalken 40 direkt mit einem unteren Endbereich der Antriebswelle 34 verbunden sein und ein Motorabschaltkreis verwendet werden, um den Verbrennungsmotor 30 abzustellen und eine Rotation des Messerbalkens 40 zu beenden.An internal combustion engine 30 is arranged on the mower 20 and has a vertical drive shaft 34 which via a Knife brake (BBC) 36 with a winged Cutter bar 40 is connected to cutter bar 40 about an axis 34a of the drive shaft 34 to rotate. Alternatively, the Cutter bar 40 directly with a lower end of the Drive shaft 34 connected and an engine shutdown circuit used to turn off the engine 30 and to stop rotation of the cutter bar 40.

In einem oberen Motorgehäuse 46 ist ein elektrischer Generator 50, vorzugsweise eine Lichtmaschine bzw. ein Wechselstromgenerator, vorgesehen, der durch den Verbrennungsmotor 30 angetrieben wird und mit einem Batteriepack, einer Batterie bzw. einer elektrischen Speichereinheit 54 (Fig. 2) über einen Spannungsregler 56 verbunden ist. Der Generator 50 und die Speichereinheit 54 definieren eine elektrische Energiequelle 58, welche auch mit einem elektrischen Antriebs- und Navigationssystem bzw. einem Lenksystem verbunden ist, welches in Fig. 2 allgemein mit 60 bezeichnet wird. Ein elektrischer Anlasser 64 ist mit dem Verbrennungsmotor 30 verbunden, um den Verbrennungsmotor 30 beim Anlassen anzuwerfen. Die elektrische Speichereinheit 54 stellt eine Nennspannung zur Verfügung, welche vorzugsweise in einem Bereich von ungefähr 12 bis 42 Volt liegt, und ist an dem Rahmen 12 hinter den rückwärtigen, antreibbaren Radzusammenbauten 16 und 18 angeordnet. Hinter dem Verbrennungsmotor 30 ist ein Kraftstofftank 66 vorgesehen.In an upper motor housing 46 is an electrical generator 50, preferably an alternator or a AC generator provided by the Internal combustion engine 30 is driven and with a Battery pack, a battery or an electrical Storage unit 54 (FIG. 2) via a voltage regulator 56 connected is. The generator 50 and the storage unit 54 define an electrical energy source 58, which also with an electric drive and navigation system or one Steering system is connected, which is generally 60 in Fig. 2 referred to as. An electric starter 64 is connected to the Internal combustion engine 30 connected to internal combustion engine 30 to start when starting. The electrical storage unit 54 provides a nominal voltage, which is preferably in is in a range of about 12 to 42 volts, and is at that Frame 12 behind the rear, drivable Wheel assemblies 16 and 18 arranged. Behind the Internal combustion engine 30, a fuel tank 66 is provided.

Das Lenksystem 60 weist eine Steuereinheit 70 (Fig. 2) auf, welche mit der Energiequelle 58 und einem Navigations- und Hindernisserkennungsschaltkreis oder Lenkkreis 72 verbunden ist, um eine Mähgerätssteuerung zur Verfügung zu stellen. Die Steuereinheit 70 weist auch einen Ausgang 74 auf, welcher mit der Motorbremse 36 zur Steuerung des Bremsens, Einrückens und Ausrückens des Mähbalkens 40 in Verbindung steht. Radantriebssteuerungsausgänge oder Steuerausgänge 76 und 78 der Steuereinheit 70 ermöglichen jeweils eine Steuerung der einzelnen Radantriebszusammenbauten 16 und 18. Der Lenkkreis 72 weist vorzugsweise konventionelle Berührungssensoren, Ultraschallsensoren und/oder Infrarotsensoren zur Vermeidung von Hindernissberührungen, und ein konventionelles Navigationssystem wie ein Satellitenortungssystem (GPS), ein Ultraschallsystem oder ein Lasersichtsystem auf. Es soll deutlich werden, dass die vorliegende Erfindung mit vielen verschiedenen Arten von Navigations- und Hindernisserkennungsschaltkreisen einschließlich einer Fernbedienung durch eine Bedienungsperson verwendet werden kann und diese speziellen Arten nur beispielhaft angegeben werden.The steering system 60 has a control unit 70 (FIG. 2), which with the energy source 58 and a navigation and Obstacle detection circuit or steering circuit 72 connected to provide mower control. The Control unit 70 also has an output 74, which with the engine brake 36 for controlling braking, engagement and Disengagement of the cutter bar 40 is connected. Wheel drive control outputs or control outputs 76 and 78 of the Control unit 70 each enable control of the individual wheel drive assemblies 16 and 18. The steering circuit 72 preferably has conventional touch sensors, Ultrasonic sensors and / or infrared sensors for avoidance of touching obstacles, and a conventional one Navigation system such as a satellite positioning system (GPS) Ultrasound system or a laser vision system. It should it will be apparent that the present invention has many different types of navigation and Obstacle detection circuitry including one Remote control can be used by an operator and these special types are only given as examples.

Die antreibbaren Radzusammenbauten 16 und 18 weisen elektrische Antriebssteuerungskreise bzw. Antriebssteuerungen 86 und 88 (Fig. 2) auf, welche mit der elektrischen Energiequelle 58 verbunden sind und Ausgangsanschlüsse aufweisen, welche mit Elektromotoren 96 und 98 verbunden sind. Die Ausgangsanschlüsse der einzelnen Antriebssteuerungen 86 und 88 und somit die Richtung, Geschwindigkeit und das Drehmoment der einzelnen Elektromotoren 96 und 98 hängen von den Steuerausgängen 76 und 78 ab. Die Polarität, Spannung, der Arbeitszyklus und/oder die Spannung des Ausgangs der Antriebssteuerungskreise 86 und 88 kann verändert werden, um die gewünschte Steuerung zur Verfügung zu stellen. Untersetzungsgetriebe 106 und 108 verbinden die Elektromotoren 96 und 98 mit antreibbaren Rädern 110 und 112, um das Mähgerät 10 unter Leitung der Steuereinheit 70 und des Lenkkreises 72 anzutreiben. Die Steuereinheit 70 und der Lenkkreis 72 steuern auch das Einrücken und Ausrücken des Antriebs des Messerbalkens 40.The drivable wheel assemblies 16 and 18 have electrical Drive control circuits or drive controls 86 and 88 (FIG. 2), which is connected to the electrical energy source 58 are connected and have output connections which with Electric motors 96 and 98 are connected. The output ports of the individual drive controls 86 and 88 and thus the Direction, speed and torque of each Electric motors 96 and 98 depend on the control outputs 76 and 78 from. The polarity, voltage, duty cycle and / or the Voltage of the output of the drive control circuits 86 and 88 can be changed to the desired control To make available. Reduction gear 106 and 108 connect the electric motors 96 and 98 to drivable wheels 110 and 112 to the mower 10 under the control of the control unit 70 and the steering circuit 72 to drive. The control unit 70 and the steering circuit 72 also control the engagement and disengagement of the Drive of the cutter bar 40.

Anhand des oben beschriebenen Systems kann eingeschätzt werden, dass der Antrieb des Mähbalkens 40 direkt durch den Verbrennungsmotor 30 zur Verfügung gestellt wird. Sollte es gewünscht sein, kann der Antrieb des Mähbalkens 40 oder der Mähbalken durch einen motorgetriebenen Hydraulikantrieb, wie einem hydrostatischen Antrieb 38, wie er schematisch in Fig. 5 dargestellt ist, erzielt werden. Wenn die Schneidfunktion beispielsweise durch mehrere Spindeln 40r bewirkt wird, kann der Antrieb durch Hydraulikmotoren 40h, welche mit den Spindeln 40r verbunden sind und durch eine Hydraulikpumpe 41 angetrieben werden, welche mit der Antriebswelle 34 des Verbrennungsmotors 30 verbunden ist, zur Verfügung gestellt werden. Daher können Mähbalken mit höheren Leistungsanforderungen und einer besseren Schneid- und Förderkapazität, wie Messerbalken mit Flügeln 40, wie in den dargestellten Figuren, oder mehrere Spindeln 40r, wie in Fig. 5 gezeigt, verwendet werden, da die Einschränkungen eines Elektroantriebs vermieden wird. Darüber hinaus liegen der Antrieb und die Lenkung des Mähgeräts 10 unter der Steuerung der Steuereinheit 70 und des Lenkkreises 72. Der Antrieb des Mähbalkens 40 ist nicht mit dem Verbrennungsmotor 30 sondern mit einer elektrischen Energiequelle 58 verbunden um eine bequemere und weniger teuere und komplexe Geschwindigkeits-, Richtungs- und Lenkungssteuerung zu ermöglichen, als diese an anderen Arten von Antriebssystemen einschließlich mancher Hybridsysteme, welche den Antrieb mit den Rädern verbinden, benötigt werden.Using the system described above, it can be estimated that the drive of the cutter bar 40 directly through the Internal combustion engine 30 is provided. Should it may be desired, the drive of the cutter bar 40 or the Cutter bar by a motor-driven hydraulic drive, such as a hydrostatic drive 38, as shown schematically in FIG. 5 is shown can be achieved. If the cutting function can be effected, for example, by a plurality of spindles 40r the drive by hydraulic motors 40h, which with the spindles 40r are connected and driven by a hydraulic pump 41 which, with the drive shaft 34 of the internal combustion engine 30 is connected to be provided. Therefore can Cutter bar with higher performance requirements and a better one Cutting and conveying capacity, such as knife bars with wings 40, as in the figures shown, or several spindles 40r, as shown in Figure 5, because of the limitations of an electric drive is avoided. In addition, the Drive and steering of the mower 10 under control the control unit 70 and the steering circuit 72. The drive of the Cutter bar 40 is not with internal combustion engine 30 but connected to an electrical energy source 58 by one more convenient and less expensive and complex speed, To allow directional and steering control than this other types of propulsion systems including some Hybrid systems that connect the drive to the wheels, are needed.

Es wird nun auf die Fig. 3 und 4 Bezug genommen, in denen eine alternative Ausführungsform der Erfindung mit einer Schneideinheit mit mehreren Messerbalken, welche direkt durch einen Motor angetrieben werden, gezeigt wird. Ein selbstfahrendes Mähgerät 210 weist einen Rahmen 212 (teilweise aufgeschnitten dargestellt) auf, welcher sich auf dem Untergrund über einen vorderen Freilaufzusammenbau bzw. ein Freilaufrad 214 und rückwärtige elektrisch antreibbare Radzusammenbauten 216 und 218 abstützt. Ein Mähwerk mit zwei Mähbalken, welches allgemein mit 220 bezeichnet wird, wird einstellbar durch den Rahmen 212 über eine konventionelle Mähwerksaushebvorrichtung (nicht gezeigt) zur Bewegung zwischen einer angehobenen Transportstellung und einer abgesenkten Mähstellung aufgenommen. Einstellbare Spurräder 222 und 224 stützen die vorderen Bereiche des Mähwerks 20. Wenn das Mähwerk 220 in seine Mähstellung abgesenkt ist, kann die Schnitthöhe eingestellt werden, indem die Mähwerksaushebungseinrichtung und die einstellbaren Spurräder 222 und 224 eingestellt werden. 3 and 4, in which a alternative embodiment of the invention with a Cutting unit with several cutter bars, which go straight through a motor are shown. On self-propelled mower 210 has a frame 212 (partially shown cut open) on which is on the Under a front freewheel assembly or a Free wheel 214 and rear electrically driven Supports wheel assemblies 216 and 218. A mower with two Cutter bar, which is generally designated 220 adjustable through frame 212 via a conventional one Mower lifting device (not shown) for movement between a raised transport position and a lowered one Mowing position added. Adjustable track wheels 222 and 224 support the front areas of the mower 20. When the mower 220 is lowered into its mowing position, the cutting height can be adjusted by the mower lifting device and adjustable track wheels 222 and 224 are set.

Ein Verbrennungsmotor 230 ist auf dem Mähwerk 220 vorgesehen und weist eine vertikale Antriebswelle 234 auf, welche über eine elektrische Zapfwellenkupplung bzw. eine Kupplungseinrichtung 236 mit einem Riementrieb 238 in Verbindung steht. Ein Riemen 239 (Fig. 4) ist um eine Antriebsscheibe 240 geführt, welche zur Rotation um eine Achse 234a der Antriebswelle 234 verbunden ist. Der Riemen 239 ist ebenso um eine Riemenscheibe (nicht gezeigt) geführt, welche auf dem Mähwerk 220 angeordnet ist und gegenläufig rotierende, aufrechte Wellen 242 und 244 über einen konventionellen, synchronen Antrieb, welcher sich zwischen den Wellen 242 und 244 erstreckt, antreibt. Die Achsen der Wellen 234, 242 und 244 sind im wesentlichen parallel angeordnet und es sind geflügelte bzw. mit Flügeln versehene Mähbalken 246 und 247 an unteren Endbereichen der Wellen 242 und 244 zur Drehung um die entsprechenden Wellenachsen angeordnet. Alternativ könnte zwischen den Wellen 242, 244 ein nicht synchroner Keilriementrieb vorgesehen werden.An internal combustion engine 230 is provided on the mower 220 and has a vertical drive shaft 234 which over an electric PTO clutch or Coupling device 236 with a belt drive 238 in Connection is established. A strap 239 (Fig. 4) is around one Drive pulley 240 guided, which for rotation about an axis 234a of the drive shaft 234 is connected. The belt is 239 also passed around a pulley (not shown) which is arranged on the mower 220 and rotating in opposite directions, upright waves 242 and 244 over a conventional, synchronous drive, which is between the shafts 242 and 244 extends, drives. The axes of shafts 234, 242 and 244 are arranged essentially in parallel and are winged or winged cutter bars 246 and 247 at the bottom End portions of shafts 242 and 244 for rotation about corresponding shaft axes arranged. Alternatively, could a non-synchronous one between the shafts 242, 244 V-belt drive can be provided.

In einem oberen Motorgehäuse 248 ist ein elektrischer Generator 252, vorzugsweise eine Lichtmaschine bzw. ein Wechselstromgenerator, welcher durch den Verbrennungsmotor 230 angetrieben wird und mit einem Batteriepack, einer Batterie bzw. einer elektrischen Speichereinheit 254 (Fig. 3) über einen Spannungsregler (nicht gezeigt) in der oben mit Bezug auf Fig. 2 beschriebenen Art und Weise verbunden ist, angeordnet. Es ist ein elektrisches Antriebs- und Navigationssystem oder Lenksystem 260, welches im Wesentlichen mit dem Lenksystem 60 aus Fig. 2 übereinstimmt und oben für das Mähgerät 10 beschrieben ist, wobei die antreibbaren Radzusammenbauten 216 und 218 mit den angetriebenen Radzusammenbauten 16 und 18 aus Fig. 2 korrespondieren. Der Messerbremskupplungszusammenbau bzw. die Messerbremse 36 aus Fig. 2 wird durch die elektrische Kupplungseinrichtung 236 ersetzt, welche mit dem Steuerausgang 74 der Steuereinheit 70 verbunden ist. Das Lenksystem 260 wird hier nicht im Detail beschrieben werden und es wird auf Fig. 2 und die obenstehende Beschreibung für Details des elektrischen Antriebs und der Navigation Bezug genommen. Ein Puffer bzw. ein Berührungssensor, welcher allgemein mit 270 bezeichnet wird, ist ebenfalls an dem Mähgerät 210, welches in den Fig. 3 und 4 gezeigt wird, vorgesehen. Der Berührungssensor 270 liefert eine zusätzliche Eingabe an den Lenkkreis 72.In an upper motor housing 248 is an electrical generator 252, preferably an alternator or a AC generator powered by the internal combustion engine 230 is powered and with a battery pack, a battery or an electrical storage unit 254 (FIG. 3) via a Voltage regulator (not shown) in the above with reference to Fig. 2 described manner is arranged. It is an electric drive and navigation system or Steering system 260, which essentially corresponds to steering system 60 from Fig. 2 and above for the mower 10th wherein the drivable wheel assemblies 216 and 218 with the driven wheel assemblies 16 and 18 Fig. 2 correspond. The knife brake clutch assembly or the knife brake 36 of FIG. 2 is by the electrical Coupling device 236 replaced, which with the control output 74 of the control unit 70 is connected. The steering system 260 will are not described in detail here, and reference is made to FIG. 2 and the description above for details of the electrical Drive and navigation referenced. A buffer or a Touch sensor, generally designated 270, is also on the mower 210, which in FIGS. 3 and 4 is shown provided. Touch sensor 270 provides one additional input to steering circuit 72.

Ein Motorantrieb wird direkt an die geflügelten Mähbalken 246 und 247 über den Riementrieb 238 und den synchronen oder Keilriementrieb zwischen den Wellen 242 und 244 geliefert, während ein Antrieb des Mähgeräts 210 ausschließlich durch die elektrische Energiequelle 58 erfolgt. Die elektrischen Motoren 96 und 98 werden gesteuert, um eine Mähgeschwindigkeits-, Richtungs- und Lenksteuerung zu liefern. Wiederum können verschiedene Arten elektrischer Antriebs- und Navigationssysteme sowie verschiedene direkte Motorantriebe an die Schneideinheiten mit einem System entsprechend der vorliegenden Erfindung verwendet werden.A motor drive is attached directly to the winged cutter bars 246 and 247 via the belt drive 238 and the synchronous or V-belt drive delivered between shafts 242 and 244, while the mower 210 is driven exclusively by the electrical energy source 58 takes place. The electric motors 96 and 98 are controlled to achieve a mowing speed, To deliver directional and steering control. Again can different types of electric drive and Navigation systems and various direct motor drives the cutting units with a system according to the present invention can be used.

Nach der Beschreibung der bevorzugten Ausführungsform ist es offensichtlich, dass verschiedene Veränderungen durchgeführt werden können, ohne von dem Bereich der Erfindung, wie sie durch die folgenden Ansprüche beschrieben wird, abzuweichen.Having described the preferred embodiment, it is obviously that various changes have been made can be deviated from the scope of the invention as it is described by the following claims.

Claims (11)

Mähgerät (10, 210), insbesondere Rasenmäher, mit einem Verbrennungsmotor (30, 130), einem Generator (50, 252), wenigstens einer Schneideinheit, und mehreren Rädern (14, 110, 112, 214, 216, 218), wobei die Schneideinheit und der Generator (50, 252) durch den Verbrennungsmotor (30, 130) und wenigstens ein Rad (110, 112, 216, 218) durch einen Elektromotor (96, 98) antreibbar ist, dadurch gekennzeichnet, dass der Generator (50, 152) elektrische Energie an zumindest eine elektrische Speichereinheit (54, 154) liefert, welche mit dem Elektromotor (96, 98) verbunden ist.Mower (10, 210), in particular lawn mower, with an internal combustion engine (30, 130), a generator (50, 252), at least one cutting unit, and a plurality of wheels (14, 110, 112, 214, 216, 218), the Cutting unit and the generator (50, 252) can be driven by the internal combustion engine (30, 130) and at least one wheel (110, 112, 216, 218) by an electric motor (96, 98), characterized in that the generator (50, 152) supplies electrical energy to at least one electrical storage unit (54, 154) which is connected to the electric motor (96, 98). Mähgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Schneideinheit in der Art eines Mähbalkens (40, 240) oder einer Mähspindel (40r) ausgeführt istMower according to claim 1, characterized in that the cutting unit is designed in the manner of a cutter bar (40, 240) or a cutting spindle (40r) Mähgerät nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Verbrennungsmotor (30, 130) einen mit der Schneideinheit zusammenwirkende hydrostatischen Antrieb (38) antreibt.Mower according to one or more of the preceding claims, characterized in that the internal combustion engine (30, 130) drives a hydrostatic drive (38) which interacts with the cutting unit. Mähgerät nach einem oder mehreren der vorherigen Ansprüche, welches selbstständig arbeitet bzw. sich fortbewegt.Mower according to one or more of the previous ones Claims that work independently or themselves moves. Mähgerät nach einem oder mehreren der vorherigen Ansprüche, gekennzeichnet durch eine Steuereinheit (70), welche zumindest mit dem Rad (110, 112, 216, 218) und der elektrischen Speichereinheit (54, 254) zusammenwirkt.Mower according to one or more of the preceding claims, characterized by a control unit (70) which interacts at least with the wheel (110, 112, 216, 218) and the electrical storage unit (54, 254). Mähgerät nach Anspruch 5, dadurch gekennzeichnet, das die Steuereinheit mit einem fernsteuerbaren und/oder selbsttätigen Lenksystem (60, 260) zusammenwirkt. Mower according to claim 5, characterized in that the control unit interacts with a remotely controllable and / or automatic steering system (60, 260). Mähgerät nach einem der Ansprüche 5 oder 6, gekennzeichnet durch mehrere antreibbare Räder (110, 112, 216, 218), welche durch die Steuereinheit (70) unabhängig voneinander gesteuert werden können.Mower according to one of claims 5 or 6, characterized by a plurality of drivable wheels (110, 112, 216, 218) which can be controlled independently of one another by the control unit (70). Mähgerät nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, dass die elektrische Speichereinheit (54, 254) durch eine Batterie bzw. durch einen Batteriepack gebildet wird.Mower according to one or more of the preceding claims, characterized in that the electrical storage unit (54, 254) is formed by a battery or by a battery pack. Mähgerät nach einem oder mehreren der vorherigen Ansprüche, gekennzeichnet durch eine zwischen dem Verbrennungsmotor (30, 230) und der Schneideinheit wirksam angeordnete Kupplungseinrichtung (236).Mower according to one or more of the preceding claims, characterized by a coupling device (236) which is effectively arranged between the internal combustion engine (30, 230) and the cutting unit. Mähgerät nach Anspruch 9, dadurch gekennzeichnet, dass die Kupplungseinrichtung (236) durch die Steuereinheit (70) gesteuert werden kann.Mower according to claim 9, characterized in that the coupling device (236) can be controlled by the control unit (70). Mähgerät nach einem oder mehreren der vorherigen Ansprüche, gekennzeichnet durch mehrere Schneideinheiten, welche mit dem Verbrennungsmotor (30, 230) über ein Getriebe, beispielsweise einen Riementrieb (238) in Verbindung stehen.Mower according to one or more of the preceding claims, characterized by a plurality of cutting units which are connected to the internal combustion engine (30, 230) via a gear, for example a belt drive (238).
EP02002415A 2001-02-06 2002-02-01 Mowing apparatus Expired - Lifetime EP1228681B1 (en)

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US09/777,815 US6604348B2 (en) 2001-02-06 2001-02-06 Mower with engine-driven blade and electrical propulsion
CA002398857A CA2398857C (en) 2001-02-06 2002-08-19 Mower with engine-driven blade and electrical propulsion

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AU779680B2 (en) 2005-02-03
US20020104300A1 (en) 2002-08-08
ATE293354T1 (en) 2005-05-15
CA2398857C (en) 2007-01-30
US6604348B2 (en) 2003-08-12
ES2238509T3 (en) 2005-09-01
EP1228681B1 (en) 2005-04-20
CA2398857A1 (en) 2004-02-19
DE50202817D1 (en) 2005-05-25

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